Ink jet printing apparatus and method accommodating printing mod

Details Ink jet printing apparatus and method accommodating printing mod Ink jet printing apparatus and method accommodating printing mod

1997-07-24

1999-11-02

Moses, Richard

Incremental printing of symbolic information

Ink jet

Controller

347 11, B41J 2205

Patent

active

059756721

ABSTRACT:
Ink jet printing apparatus accommodating printing mode control for printing an output image on a receiver medium in response to an input image file having a plurality of pixel values. The printing mode is selected in such a manner that image artifacts are eliminated without excessively increasing printing time or ink laydown. The apparatus comprises a printhead and at least one nozzle integrally connected to the printhead, which nozzle is capable of ejecting an ink droplet therefrom. The apparatus also comprises a waveform generator associated with the nozzle for generating an electronic waveform to be supplied to the nozzle, so that the nozzle ejects the ink droplet in response to the waveform supplied thereto. In addition, a printer mode look-up table is also provided for storing a printing mode assigned to the waveform. A calibrator is connected to the first calibrator and is also associated with the waveform generator for adjusting the electronic waveform. An image halftoning unit is connected to the second calibrator for halftoning the calibrated image file in order to generate a halftoned image file having the pixel value defined by the waveform serial number. All the pixels are obtained without increasing the number of printing passes.

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patent: 5621524 (1997-04-01), Mitani
patent: 5631675 (1997-05-01), Futagawa
patent: 5633662 (1997-05-01), Allen et al.

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